73816 has 8 divisors (see below), whose sum is σ = 138420. Its totient is φ = 36904.

The previous prime is 73783. The next prime is 73819. The reversal of 73816 is 61837.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4606 + ... + 4621.

2⁷³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

73816 is a deficient number, since it is larger than the sum of its proper divisors (64604).

73816 is a wasteful number, since it uses less digits than its factorization.

73816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233 (or 9229 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 73816 is about 271.6910009551. The cubic root of 73816 is about 41.9485386345.

The spelling of 73816 in words is "seventy-three thousand, eight hundred sixteen".